<template>
  <Demo @hello="showHelloMsg" msg="你好啊" school="qinghua">
  <template v-slot:qwe>
    <span>qinghua</span>
  </template>

  <template v-slot:fgh>
    <span>qinghua</span>
  </template>
  </Demo>
</template>

<script>
import Demo from './components/Demo.vue'

export default {
  name: 'App',
  components:{Demo},
  setup(){
    function showHelloMsg(value){
      alert(`你好啊，你触发了hello事件，我收到的参数是：${value}!`)
    }
    return {
      showHelloMsg
      }
  }
}
</script>

